Kabushiki Kaisha Kawai Gakki Seisakusho

Takahiro Tajima

Katsuhiko Torii

Tadayuki Ishida

Keiji Konishi

The present invention provides an exterior structure for an electronic keyboard instrument which has excellence in an outward appearance and which can be produced easily without detracting acoustic characteristics. In the present invention, a recess groove extending in a direction in which keyboards are arranged is formed at an upper portion of a back panel of the electronic keyboard instrument , a locking edge formed at an upper edge of a speaker cover is fitted into the recess groove , and a lower edge of the speaker cover is fixed to a lower portion of the back panel by a screw . A lower portion of the back panel is provided with a positioning stopper 4 which abuts against a back surface of a keybed of the electronic keyboard instrument , and a fixing piece which abuts against a lower surface of the keybed . A thick plate having rigidness is provided around the periphery of the speaker-mounting hole . An outer surface of a back panel is provided with a display of character or the like, and the speaker cover is formed into a size capable of covering substantially the entire surface of the back panel . The size, shape or angle of the holes of the porous speaker cover differentiated at a front portion of a speaker and at a front portion of the display.

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Shizuoka-ken, Japan

Takahiro Tajima